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Finding the Fourth Proportional to 1,453.73, 2,179.37 and 631.39

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Solution

The fourth proportional to 1,453.73, 2,179.37 and 631.39 is: 946.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,453.73 : 2,179.37 = 631.39 : x
  2. Step 2: Convert to fraction form
    1,453.73/2,179.37 = 631.39/x
  3. Step 3: Cross multiply
    1,453.73x = 2,179.37 × 631.39
  4. Step 4: Simplify right side
    1,453.73x = 1,376,032.42
  5. Step 5: Solve for x
    x = 1,376,032.42/1,453.73
  6. Step 6: Final answer
    x = 946.55

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.